MAX186EVKIT-DIP Maxim Integrated, MAX186EVKIT-DIP Datasheet - Page 3

• Manufacturer Part Number: MAX186EVKIT-DIP
• Description: Data Conversion IC Development Tools Programmers, Development Systems
• Manufacturer: Maxim Integrated
• Series: MAX186, MAX188r

Specifications of MAX186EVKIT-DIP

• Interface Type: 4-Wire (SPI, Microwire, QSPI, TMS320)
• Factory Pack Quantity: 1

1) Solder the 10-pin SIP resistor, provided with the kit,
2) Connect +5V and ground (GND) to the appropriate-
3) To operate the MAX186 in single-supply mode,
4) Connect a clock signal (0.1MHz to 0.4MHz*) to the
5) Ground the header pin, labeled
6) Connect an analog input source to the channel 7
7) Connect an oscilloscope, as shown in Figure 5 of
*
An ICL7660 +5V to -5V converter and a DG413 analog
switch (mounted on the MAX186 evaluation board) pro-
vide the means to switch the MAX186’s V
between ground and -5V. The analog switch is not
required for most application circuits because the V
voltage will be fixed at either -5V or ground. A negative
V
expected to go below ground.
The ICL7660 provides a -5V source with minimal addi-
tional circuitry. The ICL7660 converter circuit on the
MAX186 EV kit is the standard circuit for +5V to -5V
conversion. Its 10mA output capacity is much more
than is needed by the MAX186, which requires only
50µA. The additional current is available for user cir-
cuits in the prototyping area. For applications where
the MAX186 is the only load, the 10µF capacitors may
be reduced to 0.1µF.
SS
in the R9 location on the EV kit board. The SIP resis-
tors act as pull-ups for the digital signals connected
to the 8-pin header. The marked end of R9 is pin 1.
ly labeled pads on the evaluation board.
ground the header pin marked VSEL. Leaving the
pin open sets the MAX186 V
ply operation).
header pin, labeled SCLK.
input pad, labeled CH7.
the MAX186/MAX188 data sheet.
To run at clock frequencies up to 2MHz, an external
compensation capacitor must be connected to the
VREF pin. Install the 22µF capacitor supplied with the
kit in location C6, and cut the trace across jumper
JU2 to disable the MAX186 internal compensation.
supply is required only when the MAX186’s input is
MAX186 Evaluation System/Evaluation Kit
_______________________________________________________________________________________
Detailed Description
SS
pin to -5V (dual-sup-
CS
.
V
SS
SS
Circuit
voltage
SS
Table 1. Port 1 Bit Functions
The 80C32 and MAX186 communicate through the 8
bits of port 1 on the 80C32. Table 1 lists the function of
each bit. The 80C32 drives MAX186 input data on the
DIN bit and receives data from the MAX186 on the
DOUT bit. For the first eight clock cycles after chip-
select (
MAX186 on the rising edge of the serial clock (SCLK)
signal. For the 12 data-output clock cycles, the
MAX186 updates DOUT data on the falling edge of
SCLK. See the MAX186 data sheet for complete infor-
mation concerning the serial interface; Figures 6-12 of
the MAX186/MAX188 data sheet are timing diagrams
for operating in the internal and external clock modes.
Note that the maximum conversion rate of the EV sys-
tem is limited to 5ksps, because of the speed limitation
of the 80C32. For evaluation at full speed, see the
MAX186 EV Kit Quick Start section.
P1.0
P1.1
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7
BIT
CS
) goes low, DIN data is clocked into the
V
SSTRB
NAME
SHDN
DOUT
SCLK
SS
DIN
CS
–
SEL
V
pin between ground and -5V. Logic low,
V
Serial clock for data transfer
Drives the MAX186 SHDN pin. Cut
jumper JU2 to float the SHDN pin.
Not used
MAX186 SSTRB pin. Provides the busy
output during internal clock mode (see
MAX186/MAX188 data sheet).
MAX186 DOUT pin. Transfers conver-
sion data from the MAX186 to the
80C32.
MAX186 CS pin. Enables serial com-
munications with the MAX186.
MAX186 DIN pin. Transfers data from
the 80C32 to the MAX186.
SS
SS
select switches the MAX186 V
= 0V; logic high, V
Serial Interface
FUNCTION
SS
= -5V.
SS
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